Northern Prairie Wildlife Research Center

Toxicity of Fire Retardant Chemicals to Aquatic Organisms: Progress Report

Table 6

Table 6. Summary of ammonia characteristics of five fire chemicals in tests with rainbow trout at the swim-up life stage.

Chemical
Water type
LC50 mg/l
Total ammonia NH3-N mg/L
pH range
Unionized ammonia mg/L
F-T GTS-R
Soft
363
77
7.61-7.74
0.83-1.11
Hard
207
35
7.65-8.08
0.41-1.10
F-T LCG-R
Soft
910
120
7.00-7.20
0.32-0.50
Hard
872
93
6.98-7.36
0.24-0.56
P-C D-75-F
Soft
279
57
6.43-7.42
0.04-0.40
Hard
218
49
6.39-7.80
0.03-0.80
P-C WD-881
Soft
13
0.04
-
-
Hard
11
0.03
-
-
Silv-Ex
Soft
20
0.20
-
-
Hard
13
0.15
-
-
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